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The best way to prepare polyisobutylene...

The best way to prepare polyisobutylene is

A

coordination polymerisation

B

cationic polymerisation

C

anionic polymerisation

D

free radical polymerisation

Text Solution

Verified by Experts

The correct Answer is:
B
Since `3^(@)` carbocations are most stable . So , the best way to obtain polyisobutylene is acid catalysed or cationic polymerisation in the presence of Lewis acid or protonic acid .
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At 25^(@)C , a solution containing 0.2 g of polyisobutylene in 100 mL of benzene developed a rise of 2.4 mm at osmotic equilibrium. Calculate the molecular weight of polyisobutylene if the density of solution is 0.88 g// mL .

At 25^(@)C , a solution containing 0.2g of polyisobutylene in 100mL of benzene develpoed a rise of 2.4mm at osmotic equilibrium. Calculate the molecular weight of polyisobutylene if the density of solution is 0.88 g// mL